Aerial and ground connection for radio sets



1 Nov. 2, 1926. 1,665,148

J. L. MARTIN ABRIAIJ mm GROUND coumacnou FOR 111mm SETS Fil'ed Nov. 20. 1925 Patented Nov. 2, 1926 JOSHUA L. MARTIN, or AIVIARILLO, TEXAS.

AERIAL AND GROUND CONNECTION FOR RADIO SETS.

Applieation filed November 20, 1925. Serial No. 70,329.

This invention relates to electrical connecting means particularly designed for use in connection with wireless orradio apparatus, though capable of use in connection with any or all electrical devices and appliances, and has for its object the provision of novel means for bringing the aerial, ground or other connections in radio apparatus to the terminals of the apparatus or set through a floor, wall, partition or other support so that there will be no wires visible or lying about to get in the way.

An important and more specific object is the provision of connecting means designed primarily for use upon the cabinets of radio apparatus regardless of whether or not these cabinets be of the ordinary box like type or of the type similar to that employed for housing talking machines or graphophones, the connecting means being susceptible of being mounted upon the bottom, sides, back or any other place on a box like cabinet or upon the back, sides, bottom or ends of the legs of a cabinet of the talking machine type, the connecting means on the cabinet being adapted for engagement with other connecting means mounted upon a wall, floor, partition or any other place, the connections being adapted for use in bringing to the set 30 or apparatus the aerial or ground lead, loop leads, or in fact the battery and any other leads desired.

An additional object is the provision of a connection of this character which will be very simple and inexpensive, easy to install, neat in appearance, efficient and practical and a general improvement in the art.

With the above and other objects and advantages in view the invention consists in the details of construction to be hereinafter more fully described and claimed and illustrated in the accompanying drawings, in

which: The figure is a perspective View of a cabinet containing a radio set, the legs of the cabinet being in' section to disclose the connections, these connections engaging terminal plates secured upon the floor.

Referring more particularly to the drawings the numeral 12 designates a suitable cabinet which contains or carries a radio apparatus which might be of the receiving or transmitting type, probably the former. The exact arrangement, construction and mounting of the radio set forms no part of the present invention though I have indicated broadly some of the controls usually provided. It is well known'that practically Under ordinary conditions these wires are generally brought from any desired place to the cabinet simply by being strung thereto and these wires are not only unsightly in a room but cause annoyance by causing trip- I provide novel means for bringing in the aerial and ground leads to the set. In carrying out this idea I provide holes 11 in the legs of the cabinet and through these holes extend wires 12 and 18 which are brought respectively to the aerial and ground binding posts, not shown, of the receiving set. Secured on the legs, at the lower ends thereof, are concavo-convex metallic cup like members 14 to which these wires are soldered and these members close the holes 11. On the market there is at present a concavoconvex cup like member known commercially as domes of silence which are used on the legs of chairs or other pieces of furniture for permitting sliding them about with out injury to the floors and without noise. These well known devices are well adapted for my purpose though of course a specially constructed equivalent device may be provided. The exact manner or mounting these members on the legs is immaterial as it might be by means of prongs formed on the members or some other equivalent securing device.

Upon the floor at a location where the set is to be used, 1 secure a pair of spaced metallic, preferably copper, plates 15 and 16 held in place by screws, tacks, nails or other equivalent means and soldered to the undersides of these plates are wires 17 and 18, the former of which is the aerial lead-in and the latter of which is the ground connection.

In the use of the connection, the cabinetping thereover orentanglement therewith. Toavold this usual ob ect1onable condition,

type having legs, it is of course to be understood that this is merely for the purpose of illustration as the connecting means may be mounted at. any place on any type of cabinet. Likewise it is not necessary that the connecting metal plates be mounted on the floor as they could be arranged in the Wall or partitions of a building or any place Where the apparatus is to be set up and used. In addition to this there is absolutelyno limitation as to the character of the leads brought to the connecting means as they need not be aerial and ground connection but might come from a loop or might be leads from a storage or other battery. In fact I consider it to be possible to make an almost infinite number of modifications or variations in all of these and other respects Without it con- Having thus described my invention I claim In a radio apparatus mounted Within a cabinet having legs, means for connecting an aerial lead-in and ground lead to the terminals of the set, comprising metallic plates secured upon the floor in spaced relation, one plate having the aerial lead-in Wire secured thereto and the other plate having a ground lead secured thereto, a pair of metallic concavo-convex dome members mounted upon tWo of the legs of the cabinet and engaging upon said plates, said legs being formed With holes, and Wires extending through said holes, secured to said domes and leading to the respective terminals of the set.

' In testimony whereof I aflix my signature.

stituting a departure from the spirit of the I invention or the underlying principles thereof.

JO SHUA L. MARTIN. 

